战斗机过失速机动特征指标的量化评估

战斗机采用过失速机动动作能够有效地提高空战效能和生存能力.利用四元数法建立了带推力矢量的飞机大迎角全量运动方程,依据过失速机动的主要目的"改变机头指向",结合战斗机的机动性和敏捷性,分析了在过失速机动过程中主要运动参数的变化规律,提出了分析评估飞机过失速机动性能优劣的4个指标,即最大配平迎角、从平飞状态拉起到机动迎角和从机动迎角恢复至初始平飞状态的时间、在机动迎角下绕速度矢量滚转并截获90°倾斜角的时间和过失速空战周期,并针对这4个指标开展了相应的全量仿真和量化评估研究,结果表明提出的指标可对过失速机动动作做出有效评估. 

Quantitative evaluation on characteristic index of post-stall maneuvers fighter

The post-stall maneuver can effectively improve the fighter's ability of air-combat and survival.The dynamic equations of high angle of attack with thrust vector using quaternion method were built.According to the purpose of post-stall maneuver-changing nose pointing,and combining maneuverability and agility,the changing law of primary parameter of post-stall maneuver process was analyzed.Four indexes evaluating the post-stall maneuver quality were proposed,including maximal trim angle of attack,the time ta...